Houston’s overall vacancy of 10.9 percent is the same as one year ago, and is the third lowest in the nation among major metro areas.

Asking rents for all classes of office space increased 1.0 percent through 3Q 2013 after rising 3.6 percent in 2012.

Class A rents rose 2.4 percent through 3Q 2013, and Class B rents increased 0.7 percent in the same period. Class A rents have been rising faster than Class B rents because of the flight to quality underway, with stronger demand for newer space.